Make fields private

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1445143 13f79535-47bb-0310-9956-ffa450edef68
UCDetector: Reduce visibility

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1445146 13f79535-47bb-0310-9956-ffa450edef68